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Watt-hour (Wh) is a unit of energy.

1 watt-hour is the energy that is consumed by power consumption of 1 watt during time period of 1 hour:

1 Wh = 1W x 1hr

1000 watt-hour are equal to 1 kilowatt-hour:

1000 Wh = 1 kWh

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12y ago
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6mo ago

A Watt-hour (Wh) is a unit of energy equal to one watt of power consumed for one hour. A kilowatt-hour (kWh) is a unit of energy commonly used by utilities to measure electricity consumption, equivalent to 1,000 watt-hours.

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15y ago

The watt-hour (symbolized Wh) is a unit of energy equivalent to one watt (1 W) of power expended for one hour (1 h) of time. The watt-hour is not a standard unit in any formal system, but it is commonly used in electrical applications. An energy expenditure of 1 Wh represents 3600 joules (3.600 x 103 J). To obtain joules when watt-hours are known, multiply by 3.600 x 103. To obtain watt-hours when joules are known, multiply by 2.778 x 10-4. In general, energy (E) is equivalent to power (P) multiplied by time (t). To determine E in watt-hours, P must be expressed in watts and t must be expressed in hours. Suppose a 60-W bulb burns for 3 h. Then P = 60 and t = 3, so the energy E in watt-hours is: E = Pt = 60 x 3 = 180 Wh If P and t are not specified in watts and hours respectively, then they must be converted to those units before determining E in watt-hours. from wikianswers

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12y ago

1 kW hr or 1 kilowatt hour is one thousand watts used for one hour. It is the unit that electric utility companies use to bill costumers. For example; you turn on ten 100 watt light bulbs, that is 1000 watts, leave them on for one hour and that is one kW hr. If your electric utility company charges $0.20/kW hr burning those ten bulbs cost you $0.20.

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13y ago

A kilowatt hour is 1000 watt hours.

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A watt hour is the amount of energy consumed, over a period of one hour, at the rate of one watt. The rate of consumption of energy being 'power'.

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Q: What is the definition of Watt-hour and kilowatt-hour?
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Electric energy used in homes is measured using a. a voltmeter. c. an ammeter. b. an ohmmeter. d. a kilowatthour meter.?

d. a kilowatthour meter. Electric energy used in homes is measured in kilowatthours, which is the unit for energy consumption. Kilowatthour meters measure the total amount of electricity consumed in a household over a period of time.


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Electric companies make money primarily through the sale of electricity to consumers. They generate revenue by charging for the amount of electricity used, often measured in kilowatt-hours. Additionally, they may earn income from service fees, maintenance charges, and selling excess power to other utilities or grid operators.


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Electrical energy is a form of energy, and can be measured in the same units, Joules in the SI system. Note that 1 watt = 1 Joule/sec. Electrical energy is often expressed in Kilowatthours or Megawatthours, which are the normal ways an electric company measures your usage. 1 Kilowatthour just means a steady power of 1 kilowatt maintained for 1 hour. Since there are 3600 seconds in an hour, 1 kilowatthour = 3600 kilowattseconds. Now 1 watt = 1 Joule/sec, so 1 Joule = 1 wattsec, 1000 joules = 1 kilowattsec, so 3600 kilowattsecs = 1000 x 3600 Joules = 3.6 x 106 Joules = 1 kilowatthour.


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for a disc type (electromechanical) meter the number of disc revolutions to indicate 1 kwh would be found by the formula 1000/ Kh, the watthour constant of the meter.


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Convert 250watt sound output in kilowatthour?

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Definition is the same as meaning.